Spec changing for tests
 Model, controller and all changes to cancancan
Gemfile and test helper
 Changing spec redirect
Modifying navbar according to role
validate phases inside period
Starting the construction of the composition between Phases and Evaluation Period
Fixing helper methods for creating the composition between Phases and Evaluation Period
Creating validation for overlapping phases
Commenting tests to merge with working_tree (temporary)
Implementing validation to avoid overlapping evaluation period
Implementing methods to define and verify status of phases
Creating automatic routine (task) to check status of a phase, using the GEM Whenever
Implementing methods to define and verufy status of EvaluationPeriod
Creating automatic routine (task) to check status of a EvaluationPeriod, using the GEM Whenever
Improving View of EvaluationPeriod and fixing details of the verification EvaluationPeriod's status
Fixing validation of not_overlap_evaluation_period
Put status in evaluation's index
Adding gem will_paginate and appling in users list
Adding search with User Name